White-Rodgers 1E78-140 Thermostat

The White-Rodgers 1E78-140 Thermostat is a reliable, non-programmable thermostat designed for basic heating control. This 1-Heat (Conventional), 1-Stage model delivers straightforward comfort for gas, oil, or electric systems and is easy to install in residential settings.

It supports both battery operation (30V) and 24V AC hardwired connections at 50/60 Hz, with a current rating of 1 to 1.5 A on the load terminal. The compact rectangular vertical cover fits standard wall openings, while the 1.2 square inch display keeps temperature readings clear.

• Type: Non-programmable thermostat
• System: 1-Heat (Conventional), 1-Stage
• Terminals: RH, W
• Voltage: Battery (30V) or 24V AC hardwire
• Display: 1.2 in²
• Temperature range: 32–105°F ambient, 45–90°F setpoint
• Cover: Rectangular vertical
• Applications: Gas, Oil, Electric
• Dimensions: 3-3/16" W × 1-1/8" D × 5-5/16" H
• Humidity tolerance: 90% non-condensing